Sprinkler



(No Model.) 7

G. DOELGER & 0. KIRSTEN.

SPRINKLER.

Patented Nov. 22-, 1892.

' on line 4 4 of Fig. 1.

UNITED STATES PATENT OFFICE.

CHARLES DOELGER AND OSCAR KIRSTEN, OF MILNVAUKEE, YVISOONSIN.

'SPRIINKLER.

SPECIFICATION formingpart of Letters Patent No. 486,667, dated November22, 1892.

Application filed April 21, 1892.

To all whom it may concern.-

Be it known that we, CHARLES DOELGER and OSCAR KIRSTEN, citizens of theUnited States, and residents of Milwaukee, in the county of Milwaukee,and in the State of Wisconsin, have invented certain new and usefulImprovements in Sprinklers; and we do hereby declare that the followingis a full, clear, and exact description thereof.

Our invention relates to new and useful improvements in sprinklers; andit consists in the matters hereinafter described, and pointed out in theappended claims.

The several features of our invention will be hereinafter described indetail with reference to the accompanying drawings, in which- Figure 1is a central vertical sectional view of a sprinkler constructed inaccordance with our invention, said section being taken on line 1 1 ofFig. 2. Fig. 2 is a horizontal sectional view of the same,taken online22of Fig. 1. Fig. 3 is a face view of the oblique rear side of thedevice. Fig. 4 is a detail sectional view taken Fig. 5 is a fragmentaryview, in side elevation, of one portion of the device. Fig. 6 is adetail perspective view of one of the parts. Fig. 7 is a detailelevation of the upper part of the adjustable plate for regulating thesize of the opening for the discharge of liquid.

In said drawings, A represents the sprinkler-head, preferably providedwith a screwthreaded neck a for attaching the device to the end of asuitable pipe and having an inlet passage or throat A for liquid, asshown. The rear wall of the head is conveniently made oblique, as at B,and is provided on its inner surface with a groove b, and upon its outersurface with a projecting boss I), having a square aperture B therein,which registers with the groove 1).

0 represents the discharge-opening of the head, and D an adjustableplate for regulating the discharge of liquid therefrom. The plate D isconveniently provided with an 0blique upwardlyextending portion D,arranged to slidingly engage with the inner surface of the oblique rearWall B of the head A, said oblique portion D being provided with a slot(1, extending downwardly from its upper edge and adapted to admit thesquared Serial No. 430,067- (No model.)

part of a bolt E, shoulders d (1 being formed I upon the upper ends ofthe side walls of the slot 01 and arranged to engage with the head E ofthe bolt. A rib d is formed upon the surface of the part D of the plateD and is arranged to engage with the groove b in the inner surface ofthe oblique wall B of the head A, so as to guide the said plate in itsmovements upon the said wall.

The bolt E is arranged to project through the aperture B in the wall Bof the head A and is screw-threaded upon its outer end, as at e, andadapted for engagement With a suitable nut F, which is convenientlyprovided with an operating-handle F. The aperture B is of considerablylarger size than the squared part of the bolt E, as shown, andabushingG, of a size and contour to conform to said aperture and provided withasquared aperture g, adapted to fit snugly around the squared portion ofthe bolt, is arranged to be inserted in said aperture and is providedwith an annular flange G, adapted to engage with the nut F when thelatter is screwed down upon the threaded end of the bolt E so as tocrowd the bushing firmly into the aperture B. The walls g g of saidbushing are made of different thicknesses upon the several sides of theaperture g, as shown more particularly in Figs. 4 and 6, for a purposeto be presently explained. Upon the surface of the projecting boss I)and arranged at intervals around the aperture B is provided a suitablescale'H of designating figures or characters, as shown in Figs. 3 and 4,and the annular flange G on the bushing G is provided with an indexfinger or point g adapted to register with one or another of saiddesignating figures or characters, according to the position of thebushing within the aperture B.

The lower edge B of the oblique rear wall B of the head is prolongedbelow the lower edges of the side walls of the same, and the horizontalportion of plate D is arranged to occupy a position immediately belowsaid side walls, the rear edge of the same being fitted to the lowerpart of said oblique wall and arranged to slide thereon. The saidhorizontal part of the plate is constructed in substantially asemicircular form, and the side walls of the head arecorrespondingly-shaped, as

shown. The lower edge of the semicircular wall of the head is preferablyrounded inwardly and downwardly, as at I, and the curved edge of theplate D is provided with a straight beveled upturned lip J, adapted tocome just beneath the edge I of the wall of the head A.

Adjustment of the plate D to regrlate the size of the outlet for liquidis effected in the following manner: The plate D being supported inposition by the engagement of the shoulders d d with the head E of thebolt IE, it follows that if the bolt E be dropped lower down in theaperture B the plate D will be moved away from the lower edge of thesemicircular wall of the head to a corresponding extent so as to give anincreased opening for the discharge of the liquid, or vice versa. By thearrangement of the bushing G with the walls 9 g of differentthicknesses, as before described, the position of the bolt E withrespect to the aperture B may be changed by simply loosening the nut F,removing the bushing G, and inserting it again in the aperture withanother one of its side walls uppermost. If the said upper Wall isthicker, the bolt will obviously be crowded downwardly, and if it bethinner the bolt will be moved upwardly within the aperture, therebyserving to adjust the plate D to give the desired amount of opening forthe discharge of liquid. By the arrangement of the plate D, asdescribed, to be held in its adjusted position by the engagement of theshoulders (Z' d with the head of the bolt it is obvious that said platemay be readily detached by simply loosening the nut sufliciently topermit the bolt to be pushed inwardly sufficiently to free it fromengagement with the shoulders 01' d, when said plate may be easily andquickly removed.

A great advantage is gained by our improvements in this respect over theordinary forms of devices of this character by reason of the readyremoval of the plate, as in case of any accumulation of dirt in thesprinklerhead, which would operate to prevent proper operation of thedevice, it is only necessary to slightly unscrew the nut and remove theplate to afford access to the inside of the device for cleaning.

By the construction of the head Awith the rear wall B inclined towardthe front or discharge side, as shown, a forward direction is given tothe liquid as itdescends through the head and it is caused to dischargewith greater force from the outlet-aperture than would be the case werethe wall B made vertical.

A further advantage is gained by the 0011- struction of the edges I andJof the side wall of the head and the forward edge of the plate D,respectively, in the form of semicircles from the fact that the liquidis caused to spray over a large surface, this feature being especiallydesirable in the use of sprinklers upon sprinkling-carts. Furthermore,by the construction of the lower edge of the semicircular wall of thehead with an oblique or rounded surface and the edge of the plate D withthe straight beveled upturned lip, as shown and described, the liquid inescaping from the dischargeopening is given an upward direction so as tocause it to spread over a larger surface and spray more evenly over thesame than would be the case if the liquid were permitted to escape in ahorizontal direction.

As shown in the drawings, We prefer to make the handle F of the nut F ofconsiderable size and weight and to construct the threads upon the boltE and in said nut, so as to cause the handle F to stand at an angle, asshown more particularly in Fig. 3, when the nut has been screwed downupon the bolt, so that any jarring or vibration which the device may besubjected to will onlytend to tighten the nut in position upon the bolt.

Having thus described our invention, what we claim as new, and desire tosecure byLetters Patent of the United States, is-

1. Asprinkler-head comprisiuga chambered casing having an oblique rearwall and open at its bottom and a plate arranged horizontally below theopening in said casing and provided with an oblique portion adapted foradjustable engagement with the oblique wall of said casing,substantially as set forth.

2. Asprinkler-headcomprising acharnbered casing having an oblique rearwall and an opening in its bottom, a plate arranged below said openingand provided with an oblique portion adapted to adj ustably engage withthe oblique rear wall of the casing, an aperture through said obliquewall, a bolt extending therethrough and arranged to engage with theoblique portion of said plate, and means for adjusting said bolt withinsaid aperture to efiect a vertical adjustment of the horizontal part ofsaid plate, substantially as set forth.

3. Asprinkler-headcomprisinga chambered casing having an oblique rearwall, a substantially-semicircular front wall and an opening in itsbottom, a plate arranged horizontally below said opening and providedwith an angular portion adapted to adjustably engage with the obliquerear wall of said casing, a slot in said angular portion of the plate,an aperture in said oblique wall,a bolt extending through said slot andsaid aperture, shoulders upon said angular portion of the plate arrangedto engage with the head of the bolt, means for loosening said bolt torelease said plate, and means for adjusting the bolt within saidaperture to raise or lower said plate, substantially as set forth.

4. A sprinkler-head comprisingachambered casing having anoblique rearwall and opened at its bottom, a plate arranged to extend horizontallybelow said opening and provided with an angular portion adapted toengage with said oblique wall, an angular aperture in said oblique wall,a bolt passed therethrough and engaged with the angular portion of saidhave hereunto set our hands, at Milwaukee, in plate within the casing, anut for securing the county of Milwaukee and State of Wis 10 said boltin position, and an angular bushing cousin, in the presence of twowitnesses.

having an eccentric aperture for the bolt and CHARLES DOELGER.

5 fitted at its outside to the contour of the OSCAR KIRSTEN.

aperture in said wall, substantially as and for Witnesses: the purposedescribed. H. G. UNDERWOOD,

In testimony that we claim the foregoing we JOHN E. WILES.

